Keycloak 7.0.1 release, this version allows administrators to publish the script to the server console, using a RESTful management API. This feature is disabled by default.
Keycloak is to provide SSO for a browser and RESTful Web services integration. (JWT) specification is based on OAuth 2.0 and JSON Web Token. It is the beginning for JBoss and Wildfly communications, but has plans to provide solutions for others, such as Tomcat, Jetty, Node.js, Rails, Grails and other environments.